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Thread: Best way to repair small light leak in bellows?

  1. #11

    Join Date
    Jul 2004
    Location
    Asheville NC
    Posts
    163

    Re: Best way to repair small light leak in bellows?

    Quote Originally Posted by Shen45 View Post
    I have used the black silicone RTV sealant on small folding 645 rangefinder cameras and 3 5x4 bellows cameras. Use on the inside and let the bellows stay extended for 1-2 days then put a small amount of talc on a finger and apply that to the repair before attempting to close the bellows. Check with a torch inside the bellows will confirm if you have ultimately fixed the problem. I have one 5x4 camera I repaired this way 10-12 years ago and it is still excellent.
    I had decades of success using this on a medium format bellows. Yes, a long cure time is the secret.
    Bill McMannis

  2. #12

    Join Date
    Feb 2001
    Location
    Greenbank, WA
    Posts
    2,605

    Re: Best way to repair small light leak in bellows?

    I've used a dab of the liquid electrical tape and 15 years later the repair is still good.

  3. #13

    Join Date
    Oct 2003
    Location
    St. Simons Island, Georgia
    Posts
    880

    Re: Best way to repair small light leak in bellows?

    I’ve successfully used the liquid electrical tape, too.

  4. #14

    Join Date
    Feb 2001
    Location
    Greenbank, WA
    Posts
    2,605

    Re: Best way to repair small light leak in bellows?

    Apply the electrical tape with the bellows extended. Let it dry for a couple hours before you rack it in and compress it. Otherwise, it will stick to itself. For a pinhole just a dot will do it. The problem, of course, is that pinholes tend to be like pimples. Not many people get just one. Over time.

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